Hammer flue-cleaner.



W. J. BAKER. A'HAMMBR FLUB CLEANER. APPLICATION FILED AMM 12, 1910.

Patented'Dec. 20, 1910.

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UNTED STATES PATENT OFFTQE.

WILLIAM J. BAKER, oE osWEGo, NEW YORK, AssIGNoR or ONE-HALE To LEWIS G. GRIDLEY, 0E osWEGo, NEW YORK.

HAMMER FLUE-CLEANER.

Specification of Letters Patent.

Patented Dec. 20, 1910.

Application filed May 12, 1910. Serial No. 560,867.

To all 'whom it may concern:

Be it known that I, VILLIAM J. BAKER, of Oswego, in the county of Oswego, in the State of New York, have invented new and useful Improvements in Hammer F lue- Oleaners, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to certain improvements in hammer Hue cleaners involving` the use of a tubular frame adapted to be inserted into and through the Hues of a boiler and containing a lever hammer and a revoluble actuating member therefor which is actuated by suitable mechanism from one end of the tubular frame.

The primary object is to remove scale and other accumulations from the exterior surfaces of the Hues by vibrating the hammer against the interior surface thereof.

Another object is to inclose the hammer within the tubular frame having an opening in one side through which the hammer may be operated and adapted to rest upon the interior of the Hue to support the hammer end of the lever clear therefrom when in its retracted position, so as to render'the hammering operation more eifective than would be the case if the hammer end of the lever were exposed to rest directly against the interior surface of such Hue.

Other objects and uses will be brought out in the following description.

ln the drawings: Figure l is an elevation of a Hue cleaner embodying the various features of my invention. Fig. 2 is a longitudinal sectional view taken on line 2-2, Fig. l, showing a portion of a Hue with scale on the exterior thereof adapted to be removed by the hammer. Fig. 3 is a side elevation of the tubular frame showing the hammer lever in the opening thereof. Figs. et and 5 are transverse sectional views taken respectively on lines 4 4, and 5 5, Fig. l.

This Hue cleaner comprises the tubular frame -lhaving an elongated slot or opening -2- in one side for'receiving and permitting the operation of a hammer lever -3- which is pivoted intermediate its ends at -tto opposite sides of the opening 2- and is provided at one endv with a hammer head -5- and at its opposite end with a bearing face -6- for engagement with a rotary actuating member -7-.

The hammer end of the lever -.3`1s

spring pressedv radially and outwardly by a laminated spring 8 which also serves to press the opposite end of the lever or bearing -6- against the face of the actuating member -7-. This spring preferably consists of a series of Hat leaves secured together at one end and to one side of the tubular frame lby suitable fastening means as screws or bolts 9-, Fig. 2.

The tubular frame 1 is provided with opposite end heads 10- and -lllocated at opposite ends of the slot -2-, said heads being provided respectively with threaded apertures 12- and -13-, the aperture -12- serving to receive the threaded end of a tubular extension 14- of the frame, while the threaded aperture -13- in the advance end head -llw is adapted to receive the threadedend of a brush frame w 15- carrying a brush -16- for cleaning the interior of the Hues simultaneously with the operation of t-.he hammer which removes the scale from the exterior of the Hues.

The hammer lever -3- is substantially coeXtensive in length with that of the slot -2- in which it plays and is located wholly between the end heads -lO-- and -l1-, the hammer head -5- traveling in close proK- imity to the head M so that when the tubular frame is inserted in the Hue, one or both of the end heads thereof may rest against the interior of the Hue when the hammer is drawn back preparatory to striking a blow against the inner face of the Hue, as crthereby rendering the operation of the hammer more effective than would be the case if' such hammer were allowed to rest against the interior of the Hue when drawn back to its extreme position against the action of the spring -8-.

` The pressure of the spring 8* is applied to the inner edge of the hammer lever -3- between the fulcrum O/land hammer head -5- and preferably near the hammer head so as to exert as much force as possible in driving the hammer forwardly to its striking position. The opposite end of the spring is secured to the frame -1 at the rear side of the fulcrum -4-, thereby affording considerable elasticity of the free end of the spring.

The portions of the spring just in advance of the securing members *9- are passed through and guided Ain a lengthwise slot i-17- in a transverse partition 1S- in the tubular frame "1 the partition 1S- extending between the inner face of the springs and the adjacent edge of the lever near the fulcrum of the lattei'to stiflen the LK sides the tubular frame and at the same time' affording' means' for retaining the spring against undue lateral moven'ient. thus relieving the strain to a certain extent upon the fastening members -9-.

play of tlie'free end of the spring therein,

" i'iarticularly when' the hammer-end of the lever is drawn backand the spring isthei'eby retracted.

Une of the objects in securing the brush -,-1G'- to the advance end head -11 is to clear away the soot and other matter from vthe interior of the tube and in advance of the hammer head -5-, so that the latter may strike directly against the metal, thereby rendering the action of the hammer more effectiveV in ren'ioving the scale from the outer surface of the flue. The brush, therefore, located in the manner described wit-h reference to the hammer constitutes an important coacting element of the cleaner. as otherwise the accumulated soot or other niaterial on the interior of the tine acts as a cushion for the hammer and prevents the latter effectively removing the soot without repeating the operation many times at the same point, whereas when the brush or scraper 1(S- is moved through the flue in advance of the hammer it cleans the interior of the flue from all foreign matter and enables the hammer to come into direct contact with the metal of the flue.y thereby ar- Aring the external scale loose with a minimum amount of haimnering. A

The tubular extension -1-lof the frame 1- may be of any desired length and preferably consists of a common metalpipe which may be made up of one or more lengths according to the length of the tiue which it is desired to clean.

The actuating member -7- is made in the form of a double cam or opposite eecentrics ---V secured to or forming a part of a revoluble shaft -21- which extends lel'igthwise through and is journaled inthe tubular extension 1st- 7 said actuating lneinber -7`- being-located ust at the inner end of the rear end head 10- where it contacts with theV bearing face -G- on the adjacent end of the hammer lever lif beveled gear is secured by suitable fastening meansr` as a set screw 213# to the rear end of the tulnilar extension w-lwhere it is further held against avalar K i y .Y s

imity tothe adjacent end of the tubular extension 14-, said yoke being rotated by suitable crank arms 26- and` is provided `with a laterally projecting stud 27- upon which is journaled a beveled gear 28-- rllhis gear -L- meshes with the gear +22- and with an additional but'somewhat smaller gear or pinion #2Q-l wliichis secured to the extreme outer end of the shaft v21- in proximity to the outer end of the yoke 2a-2 'so that the yoke is held against lengthwise movement between the pinion 29- and adJacent end of the tubular extension 1li- The crank arms 2"6A constitute the op- "erating means for rotating the yoke Q5- aiid thereby rotating the shaft -21- and actuating member #-1- to operate lthe hammer "-3- againstthe action of the spring eV-Su which latter presses the hammer end of the lever with a quick blow against the interior of the iiue as the ends of the cam face (which terminateabruptly) leave the bearing face w--(S-`.

The crank arms #26- are rigidly united by a handle --SO- at one side of the axis of the shaft m-21-. the outer crank arm extending diametrically to the opposite side of the axis and is also provided with a. handle H31- substantially the same distance 4from the axis as the handle -30, whereby tension is providediwith a hub 3Q- havmg radial ends whereby one of the operators may turn the extension and hainmer supporting frame and at the saine time hold the outer end of the device in operative position7 so that another operator may rotate the shaft by means of the crank handles 30- and 3L.

That l claim is:

l. ln a flue cleaner, a tubular frame having an opening in one side and provided with opposite end heads, a transversely-disposed partition arranged in said frame, a hammer lever fulcruined in said frame below said partition and movable in said opening, a laminated spring arranged between said partition and the inner face of the frame and engaging the hammer end of the lever for forcing the latter outwardly through said opening, means for securing one end of said laminated spring to the inner face of said frame to one side of said partition, a rotary cam for operating the lever against the action of the spring, a tubular extension secured to the rear end head of said frame, a rotary shaft passing throu h said extension and operatively connecte to the cam, and means for rotating the shaft.

2. A iue cleaner comprising a tubular frame having an opening in one side, a transversely disposed partition arranged in said frame, a lever fulcrumed in said frame and arranged below the partition, a laminated spring arranged above the partition and having one end engaging the hammer end of the lever for forcing the latter outwardly through said opening, hold-fast devices for securing one end of the spring to the inner face of the frame, actuating means for operating said lever against the action of said spring, and operating means for said actuating means.

In Witness whereof I have hereunto set my hand on this 22nd day of March 1910.

VILLIAM J. BAKER. Vitnesses THOMAS L. MCKAY, GORDON SULLIVAN. 

